102921493 has 8 divisors (see below), whose sum is σ = 108737280. Its totient is φ = 97256880.

The previous prime is 102921491. The next prime is 102921503. The reversal of 102921493 is 394129201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102921493 - 2¹ = 102921491 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102921491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36393 + ... + 39118.

It is an arithmetic number, because the mean of its divisors is an integer number (13592160).

Almost surely, 2^102921493 is an apocalyptic number.

It is an amenable number.

102921493 is a deficient number, since it is larger than the sum of its proper divisors (5815787).

102921493 is an equidigital number, since it uses as much as digits as its factorization.

102921493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75587.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 102921493 is about 10145.0230655233. The cubic root of 102921493 is about 468.6356889141.

It can be divided in two parts, 1029 and 21493, that added together give a palindrome (22522).

The spelling of 102921493 in words is "one hundred two million, nine hundred twenty-one thousand, four hundred ninety-three".